MP3 II

I’ll check asap, is mp3 extension allowed in BuddyDrive settings ?

I only see “audio/mpeg”

I get an .mp3 file to upload 100% then receive “HTTP error.” under “Root folder”

No trouble with max_upload file size ?

Have you try to upload a mp3 in regular WordPress media ?

Just tested it’s working. Once the file uploaded, the download link is working fine.
mp3 files may be heavy in KB, i think you need to check if :
file size < max upload file size
current quota + file size < max quota

audio/mpeg is the option that needs to be checked in BuddyDrive settings.